LocalDate可以很方便的对日期进行处理，但是在返回给前端时，展示为如下的JSON结构：
{
"dayOfWeek": "FRIDAY",
"month": "JANUARY",
"year": 2020,
"dayOfMonth": 3,
"era": "CE",
"dayOfYear": 3,
"monthValue": 1,
"chronology": {
"calendarType": "iso8601",
"id": "ISO"
}
}
前端组件就很难处理了。接下来，我们需要将此属性反序列化并从JSON字符串序列化。为此，我们可以使用@JsonDeserialize和@JsonSerialize来注释该类的LocalDate属性，时期成为前端组件需要的String格式。
实现LocalDateDeserializer和LocalDateSerializer
下面是LocalDateSerializerand LocalDateDeserializer类的定义。
public class LocalDateDeserializer extends StdDeserializer<LocalDate> {
protected LocalDateDeserializer() {
super(LocalDate.class);
}
@Override
public LocalDate deserialize(JsonParser parser, DeserializationContext context) throws IOException {
return LocalDate.parse(parser.readValueAs(String.class));
}
}
public class LocalDateSerializer extends StdSerializer<LocalDate> {
public LocalDateSerializer() {
super(LocalDate.class);
}
@Override
public void serialize(LocalDate value, JsonGenerator generator, SerializerProvider provider) throws IOException {
generator.writeString(value.format(DateTimeFormatter.ISO_LOCAL_DATE));
}
}
实体类添加注解
实体类添加如下的注解
@JsonDeserialize(using = LocalDateDeserializer.class)
@JsonSerialize(using = LocalDateSerializer.class)
private LocalDate date;
